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IPCC, “Summary for Policymakers, in Climate Change 2007: Impacts, Adaptation and Vulnerability,” In: M. L. Parry, et al., Eds., Contribution of Working Group II to the 4th Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, 2007, p. 16.

has been cited by the following article:

• TITLE: Communicating the Probabilities of Extreme Surface Temperature Outcomes

  AUTHORS: Nathan Rive, Gunnar Myhre

  KEYWORDS: Risk; Communication of Climate Change; Probability

  JOURNAL NAME: Atmospheric and Climate Sciences, Vol.2 No.4, November 2, 2012

  ABSTRACT: The magnitude of the future global warming is uncertain, but the possible dramatic changes associated with high temperatures have seen rising attention in the literature. Projections of temperature change in the literature are often presented in probabilistic terms and typically highlight the most likely ranges of future temperature under assumed emission scenarios. However, focusing on these high probability outcomes of global warming omits important information related to the threats of low-probability but high-impact outcomes under more extreme change. As such, we argue that the literature should place more emphasis on communicating the probabilities of extreme temperature change, in a way that is accessible to policymakers and the general public. The damage associated with climate change is likely to be non-linear with temperature, and thus extreme temperature changes may pose a larger risk than the most likely outcomes. We use a simple climate model to explore the probabilities of high surface temperature under business as usual emissions scenarios, given current knowledge of the climate system. In a business as usual scenario (A1FI) we find the probability of “likely” warming (central 66%) to be approximately 4.4°C-6.9°C in 2100 (above 1900 levels). However, we find extreme (>7°C) warming to embody a notable portion of damage risk compared to this likely range.